Add options for 2018 heavy ion and low mu MC TCKs.
Added the options for 2018 Heavy Ion LHCBGAUSS-1623 and 2018 Low Mu LBHLT-472 MC TCKs.
Edited by Da Yu Tou
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Added the options for 2018 Heavy Ion LHCBGAUSS-1623 and 2018 Low Mu LBHLT-472 MC TCKs.